PHP使用递归方法遍历文件夹

<?php

$folderPath = "C:/wamp";
printDir($folderPath, 0);

function printDir($rootPath, $deep)
{
	echo $rootPath."<br>";

	$folderArr = scandir($rootPath);
	
	foreach ($folderArr as $path)
	{
		$currPath = $rootPath."/".$path;

		if ($path != "." && $path != "..")
		{
			if (is_dir($currPath))
				printDir($currPath, $deep + 1);
			else
				printItem($path, $deep + 1);
		}
	}

}

function printItem($path, $deep)
{
	echo "|";
	
	for ($i = 0; $i < $deep - 1; $i++)
	{
		echo "       |";
	}

	echo "----".$path."<br>";
}
?>